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Nano and micro structured targets to modulate the spatial profile of laser driven proton beams

Giuffrida, L.; Svensson, K. LU ; Psikal, J.; Margarone, D.; Lutoslawski, P.; Scuderi, V.; Milluzzo, G.; Kaufman, J; Wiste, T. and Dalui, M. LU , et al. (2017) In Journal of Instrumentation 12(3).
Abstract

Nano and micro structured thin (μ m-scale) foils were designed, fabricated and irradiated with the high intensity laser system operating at LLC (Lund Laser Centre, Sweden) in order to systematically study and improve the main proton beam parameters. Nano-spheres deposited on the front (laser irradiated) surface of a flat Mylar foil enabled a small enhancement of the maximum energy and number of the accelerated protons. Nano-spheres on the rear side allowed to modify the proton beam spatial profile. In particular, with nanospheres deposited on the rear of the target, the proton beam spatial homogeneity was clearly enhanced. Silicon nitride thin foils having micro grating structures (with different step dimensions) on the rear surface... (More)

Nano and micro structured thin (μ m-scale) foils were designed, fabricated and irradiated with the high intensity laser system operating at LLC (Lund Laser Centre, Sweden) in order to systematically study and improve the main proton beam parameters. Nano-spheres deposited on the front (laser irradiated) surface of a flat Mylar foil enabled a small enhancement of the maximum energy and number of the accelerated protons. Nano-spheres on the rear side allowed to modify the proton beam spatial profile. In particular, with nanospheres deposited on the rear of the target, the proton beam spatial homogeneity was clearly enhanced. Silicon nitride thin foils having micro grating structures (with different step dimensions) on the rear surface were also used as targets to influence the divergence of the proton beam and drastically change its shape through a sort of stretching effect. The target fabrication process used for the different target types is described, and representative experimental results are shown and discussed along with supporting 3D particle-in-cell simulations.

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Contribution to journal
publication status
published
subject
keywords
Accelerator Applications, Beam dynamics
in
Journal of Instrumentation
volume
12
issue
3
publisher
IOP Publishing
external identifiers
  • scopus:85017172366
  • wos:000406997400040
ISSN
1748-0221
DOI
10.1088/1748-0221/12/03/C03040
language
English
LU publication?
yes
id
8afbfb95-79c9-46a1-b110-4246f137a1ef
date added to LUP
2017-05-03 09:21:33
date last changed
2017-09-18 13:33:51
@article{8afbfb95-79c9-46a1-b110-4246f137a1ef,
  abstract     = {<p>Nano and micro structured thin (μ m-scale) foils were designed, fabricated and irradiated with the high intensity laser system operating at LLC (Lund Laser Centre, Sweden) in order to systematically study and improve the main proton beam parameters. Nano-spheres deposited on the front (laser irradiated) surface of a flat Mylar foil enabled a small enhancement of the maximum energy and number of the accelerated protons. Nano-spheres on the rear side allowed to modify the proton beam spatial profile. In particular, with nanospheres deposited on the rear of the target, the proton beam spatial homogeneity was clearly enhanced. Silicon nitride thin foils having micro grating structures (with different step dimensions) on the rear surface were also used as targets to influence the divergence of the proton beam and drastically change its shape through a sort of stretching effect. The target fabrication process used for the different target types is described, and representative experimental results are shown and discussed along with supporting 3D particle-in-cell simulations.</p>},
  articleno    = {C03040},
  author       = {Giuffrida, L. and Svensson, K. and Psikal, J. and Margarone, D. and Lutoslawski, P. and Scuderi, V. and Milluzzo, G. and Kaufman, J and Wiste, T. and Dalui, M. and Ekerfelt, H. and Gonzalez, I. Gallardo and Lundh, O. and Persson, A. and Picciotto, A. and Crivellari, M. and Bagolini, A. and Bellutti, P. and Magnusson, J. and Gonoskov, A. and Klimsa, L. and Kopecek, J. and Lastovicka, T. and Cirrone, G. A P and Wahlström, C. G. and Korn, G.},
  issn         = {1748-0221},
  keyword      = {Accelerator Applications,Beam dynamics},
  language     = {eng},
  month        = {03},
  number       = {3},
  publisher    = {IOP Publishing},
  series       = {Journal of Instrumentation},
  title        = {Nano and micro structured targets to modulate the spatial profile of laser driven proton beams},
  url          = {http://dx.doi.org/10.1088/1748-0221/12/03/C03040},
  volume       = {12},
  year         = {2017},
}